I had to go away and think about this one for a bit. I thought about some of my favourite episodes or 'moments' in B&; 'Sarcophagus' has most of the stuff that made me fall in love with B7, but thinking about it, that isn't the B7 voice, it's more Tanith Lee's voice in the context of B7 (I still love it). But that means that there probably is a B7 voice (against which 'Sarcophagus' can be compared)... So - yes, I do think B7 has a voice, and if I were thinking of the quintessential B7 voice, I'd say it was in 'Death Watch'. And that's an ensemble voice: all the parts working as a whole. (And that works for many other TV shows of the kind I like: The West Wing, DS9, Firefly.)

The other thing I thought about in relation to 'voice' was that I think I use specific characters as voices to access and illustrate specific narratives within the source text. So the 'voices' of B7 (by which I mean the stories that are most important to me) are Anna's (private love vs. public duty) and perhaps Cally's (how far is someone willing to go for their beliefs). Blake's voice suits that latter narrative too, although he gives different answers from Cally.

Just one last thing, I don't think that the voice in my Tolkien fic is always based on Tolkien; one of the things I think the Tolkien fic has let me do has been to develop something approaching a style of my own. When I did consciously set out to write a Tolkien fic in the style of my B7 or DS9 fics (Proof, I ended up devising a thirteen-part TV adventure series called 'Rangers of Ithilien' in which that story could stand as an episode :-D